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var assert = require('assert') var chain = require('./index') console.log('testing...') var count = 0; chain( function(step){ count += step }, function(step){ count += step }, function(step){ count += step } )(1) assert.equal(count, 3, 'should chain calls') count = 0; chain( function(step){ count += step }, null, undefined, function(step){ count += step } )(1) assert.equal(count, 2, 'should filter out null and undefined arguments') var fn = function(){} assert.equal(chain(fn, null), fn, 'should return the only function argument') console.log('done. tests pass!')